Jim Belushi might need a lawyer before The Board of Comedy takes the Grand Opera House stage Sunday.

The star of stage, screen and television explained that he's worried an Oshkosh speeding ticket from the 1970s might force him to Skype the performance from beyond the city limits.

"It was a beautifully-paved road and you don't realize how fast you're going," Belushi explained. "I'll be looking to pick up some overalls and pay my fine."

All jokes aside, Belushi, Brad Morris, Joshua Funk, Megan Grano and Larry Joe Campbell will take the Grand stage for a 7:30 p.m. Sunday improv performance that's not to be missed. Members of the troupe said the Oshkosh show, the last stop on their winter tour, will be their best.

"We'll be ready to give 100 percent by then," Belushi said. "We're going to give the best show Oshkosh has ever seen, the most memorable show."

Grand Opera House CEO Joe Ferlo said the show is almost sold out, with less than 100 seats, mostly the $35 balcony tickets, remaining. He said the Grand box office will sell any remaining seats to high school and college students who show a student ID for half price beginning one hour before the show starts.

The troupe's comedic bona fides span several years of stand-up, sitcoms and movies, but Belushi said audience participation is just as important in the show's improvisational format.

"It's something that they'll never forget. They may walk in with their head down, but they'll walk out with their head up," Belushi said. "It's not a sit back in your seat and watch (kind of show). They are the sixth cast member. It's fun. It's really fun."

Morris, a comedy veteran with roles on shows like "Cougar Town" and "Playing House," said the audience often learns as much about itself as the performers do.

"It's an interactive show. The audience becomes part of the show," Morris said. "They think they knew someone and then we start talking to them and they find out more."

The troupe first took shape in November 2011 and has been performing ever since. Belushi said he sought out fellow Second City alums and Campbell, whom he worked with on "According to Jim."

"I just put together some pros – Megan Grano, Josh is hilarious – and we're just flying," Belushi said. "We're having a ball. That's the whole point of what we do: Chasing the joy."

It doesn't take much to get the troupe warmed up, as they demonstrated while driving around Fort Myers, Fla., in search of coffee before they get to Belushi's Comedy Bar, a Fort Myers club Belushi owns with a cousin, where the Board of Comedy has four shows scheduled this week.

It's a little warmer in Florida than it is in Wisconsin, but Belushi, a Chicago native, knows what double digit temperatures means to Upper Midwesterners.

"That's halter top weather. We barbecue in that," Belushi said. "That's a heatwave. It's like your Indian summer."

Being from The Windy City, Belushi said he takes a little heat from Wisconsinites for his choice in sports teams, though it never gets ugly.

"I always find the Wisconsin shows to be fun. Wisconsin people are very friendly, very sweet," Belushi said. "They love to rib me about the Bears. But they do it in a good-natured way."

Beyond the performance, Belushi said the troupe plans to stick around after the show to sign merchandise the audience buys that evening and might even have a few words of encouragement for Oshkosh's own improv troupe, the Backlot Comedy House.

"I hope they come to the show," Belushi said of the Backlot troupe. "If they're there, we hang out afterward. We sign all the merchandise people purchase and greet and meet people. But we won't talk to them if they don't buy merchandise."

Belushi added: "It's our last stop. We don't want to travel back with any merchandise."